June 24, 2026
Description
A push bike that rolls on four empty filament spools — fully 3D printed, snap-together, zero hardware.
The basics:
Never printed anything this big? Most of us never get past desk trinkets, and that's exactly who this is for. The part count looks big, but it's lean for a real ride-on — and the illustrated step-by-step PDF walks you through it part by part. If you can print and follow pictures, you can build it.
It's a system, not just a bike. This is the Panda kit — one of several builds on the same Spoolster core. The seat, front, and attachments all swap, so accessories are universal and fit every kit:
| Kit / Add-on | What it is |
| Panda (this one) | The cute black-and-white panda build |
| Nightfall | The blacked-out batpod inspired build |
| TPU Tire | Snap-on TPU tread for spool wheels |
| License Plate | Customizable text license plate and slide-on bracket |
| Cupholder | Holder for bottles, cups, and whatever else kids put in |
Build a kit for whatever your kid loves and tag me — I want to see them.
On the spools: Hubs are built for Bambu and SUNLU (V3) spools. Other plastic spools should work — skip the adapters and run the axle through the center hole, or print a custom hub. I'd avoid cardboard spools; haven't tested them.
Why I built it: After printing a whole kid's wheelchair for charity, I got hooked on big prints split into bed-sized chunks. With two kids and a garage full of empty spools, turning that pile into something my kid can actually ride felt like the right kind of mission.
Boost MeEvery boost helps turn another pile of spools into the next themed Spoolster kit to share!
⚠️ Safety: Adult supervision, helmet, flat ground, 60 lb limit. It's a toy, not a way to get to school. Not responsible for any injuries or accidents.
License:
MakerWorld Exclusive License
Tim
